How OwnHomeMap turns source road classes into a visual hierarchy

OwnHomeMap converts source-specific road classes into one internal visual hierarchy; it does not claim to measure physical road width. When automatic mode is configured, OpenFreeMap/OpenMapTiles transportation.class values are normalized: motorway, trunk, primary, secondary and tertiary retain their class; minor becomes residential; service, path and track join the fine default. If automatic mode falls back to direct OpenStreetMap/Overpass, highway tags are normalized similarly: link variants follow their parents, residential, living_street and unclassified form the local class, while service, pedestrian, footway, cycleway, path and track form the fine default. The renderer presents five main visual levels: motorway; trunk and primary; secondary; tertiary; and local or minor ways. At wider extents, a radius gate omits minor ways before rendering. Themes change colors, while fixed widths correspond to internal road types. OpenStreetMap classes express network function in local contexts, and OpenMapTiles defines its own source schema. This hierarchy is a documented design normalization, not a universal legal or physical classification.